Package com.saperion.util

Class FileSizeCalcer

java.lang.Object
com.saperion.util.FileSizeCalcer
public final class FileSizeCalcer extends Object
This class can be statically used to calculate file sizes by given bytes. The devision factors 1000 (KILO_FACTOR) and 1024 (KIBI_FACTOR) are supported.
Author:
sts

  • Nested Class Summary

    Nested Classes
    Modifier and Type
    Class
    Description
    static enum 
    FileSizeCalcer.CalcFactor
    This enumeration defines the devision factors used by the FileSizeCalcer.
    static enum 
    FileSizeCalcer.FileSize
    This enumeration defines the file size exponents of the CalcFactor to calculate file sizes.

  • Method Summary

    Modifier and Type
    Method
    Description
    static long
    getBytes(double value, FileSizeCalcer.CalcFactor factor, FileSizeCalcer.FileSize unit)
    Gets the size in bytes.
    static long
    getBytesFromKB(double kb)
    Converts KB to bytes with a factor of 1024.
    static long
    getBytesFromMB(double mb)
    Converts MB to bytes with a factor of 1024.
    static double
    getGB(long bytes)
    Calculates the file size in GigaByte of the given bytes.
    static double
    getKB(long bytes)
    Calculates the file size in KiloByte of the given bytes.
    static double
    getMB(long bytes)
    Calculates the file size in MegaByte of the given bytes.
    static String
    getNiceSize(long bytes, FileSizeCalcer.CalcFactor calcFactor)
    Computes the size using the specified factor and automatically adds the proper unit (B, KB or KiB, MB or MiB, GB or GiB, PB or PiB).
    static double
    getPB(long bytes)
    Calculates the file size in PetaByte of the given bytes.
    static double
    getSize(long bytes, FileSizeCalcer.CalcFactor factor, FileSizeCalcer.FileSize size)
    Returns the size according to the given parameters.
    static double
    getTB(long bytes)
    Calculates the file size in TeraByte of the given bytes.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Method Details

    • getSize

      public static double getSize(long bytes, FileSizeCalcer.CalcFactor factor, FileSizeCalcer.FileSize size)
      Returns the size according to the given parameters.
      Parameters:
      bytes - The number of bytes.
      factor - The factor to be used to calculate the size (KIBI_FACTOR(1024) or KILO_FACTOR(1000)).
      size - The desired file size.
      Returns:
      The calculated file size.

    • getKB

      public static double getKB(long bytes)
      Calculates the file size in KiloByte of the given bytes. Using a factor of 1024.
      Parameters:
      bytes - The number of bytes.
      Returns:
      The calculated file size.

    • getMB

      public static double getMB(long bytes)
      Calculates the file size in MegaByte of the given bytes. Using a factor of 1024.
      Parameters:
      bytes - The number of bytes.
      Returns:
      The calculated file size.

    • getGB

      public static double getGB(long bytes)
      Calculates the file size in GigaByte of the given bytes. Using a factor of 1024.
      Parameters:
      bytes - The number of bytes.
      Returns:
      The calculated file size.

    • getTB

      public static double getTB(long bytes)
      Calculates the file size in TeraByte of the given bytes. Using a factor of 1024.
      Parameters:
      bytes - The number of bytes.
      Returns:
      The calculated file size.

    • getPB

      public static double getPB(long bytes)
      Calculates the file size in PetaByte of the given bytes. Using a factor of 1024.
      Parameters:
      bytes - The number of bytes.
      Returns:
      The calculated file size.

    • getBytesFromMB

      public static long getBytesFromMB(double mb)
      Converts MB to bytes with a factor of 1024.
      Parameters:
      mb - size in MB
      Returns:
      size in bytes

    • getBytesFromKB

      public static long getBytesFromKB(double kb)
      Converts KB to bytes with a factor of 1024.
      Parameters:
      kb - size in KB
      Returns:
      size in bytes

    • getBytes

      public static long getBytes(double value, FileSizeCalcer.CalcFactor factor, FileSizeCalcer.FileSize unit)
      Gets the size in bytes.
      Parameters:
      value - the value of the file size
      factor - the factor to calculate with
      unit - the size unit of the file size
      Returns:
      the size in bytes

    • getNiceSize

      public static String getNiceSize(long bytes, FileSizeCalcer.CalcFactor calcFactor)
      Computes the size using the specified factor and automatically adds the proper unit (B, KB or KiB, MB or MiB, GB or GiB, PB or PiB). The size is rounded to the next number. Example: 1135 with a factor of 1024 will result in "1 KiB".
      Parameters:
      bytes - size in bytes
      calcFactor - the factor to use when calculating the size (1024 or 1000)
      Returns:
      formatted string with size and unit